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TI-2026-21417 Aliases CVE-2026-26930GHSA-5rm3-93cg-6rcr

SmarterTools SmarterMail before 9526 allows XSS via MAPI requests.

Priority LOW 38CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

SmarterTools SmarterMail before 9526 allows XSS via MAPI requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00332 26th percentileScored 2026-11-07
Fix Fixed SmarterMail (SmarterTools): 9526

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SmarterToolsSmarterMailbefore 95269526Patch availableCNA
  • SmarterMail VendorSmarterTools Affected before 9526 Fixed in 9526 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:*——SmarterTools
  • cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:* Versions — — ·SmarterTools

Remediation

  • Fix · CNA SmarterMail (SmarterTools) Fixed in 9526

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26930
  2. 2026-10-03 Alias added: GHSA-5rm3-93cg-6rcr

References

Other 2

  • TI-2025-32755 Upload arbitrary files in SmarterTools SmarterMail KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-19690 SmarterTools SmarterMail < Build 9511 Unauthenticated RCE via ConnectToHub API KEVCVSS 4.0CRITICAL 9.3
  • TI-2026-19133 SmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API KEVCVSS 4.0CRITICAL 9.3
  • TI-2019-05110 SmarterTools SmarterMail 16.x before build 6985 allows deserialization of untrusted data. CVSS 3.0CRITICAL 9.8
  • TI-2026-70082 Code injection in SmarterMail Volume Mount allows code execution CVSS 4.0HIGH 8.6
  • TI-2020-19061 SmarterTools SmarterTrack 7922 -Information Disclosure CVSS 4.0MEDIUM 6.9
See all 55 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences